Chair armrest



FIG. 1 is a perspective view of the chair armrest showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown are included for purposes of illustrating unclaimed portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for a chair armrest, as shown and described. 